It doesn't look like this plugin is being actively supported here but it's worth a shot.
I am using WP e-Commerce and have activated the ecommerce tracking section of the plugin.
I am seeing the following database error in my apache error logs:
WordPress database error Table 'xxxxxxxx.wp_wpsc_productmeta' doesn't exist for query SELECT meta_value FROM wp_wpsc_productmeta WHERE meta_key = 'sku' AND product_id = '906' LIMIT 1 made by require('wp-blog-header.php'), require_once('wp-includes/template-loader.php'), include('/themes/xxxxxxx/page.php'), get_footer, locate_template, load_template, require_once('/themes/xxxxxxx/footer.php'), yoast_analytics, GA_Filter->spool_analytics, GA_Filter->wpec_transaction_tracking
So it seems the plugin is looking for a database table that doesn't exist.